Chair



C, JELLINEK AND D. STERN.

I CHAIR. APPLICATION FILED AUG; 9, 1919. 1,379,263. Patented May 24,1921,

2 SHEETS-SHEET I.

c. JELILINEK AND'D. STERN.

CHAIR.

' APPLICATION FILED AUG-911E219.

1| I 1 w H- m n 0 a 9 w UNITED STATES PATENT OFFICE.

CHARLES JELLINEK ,AND DAVID STERN, OF NEW YORK, N. Y;

CHAIR. I

Application filed August 9, 1919. Serial No.

To all pchom it may concern:

Be 1t known that we, CHARLES JELLINEK and DAVID STERN, citizens of theUnited States, residing in the city, county, and State.

of New York, have invented certain new and useful Improvements inChairs, of which the following is a specification.

Our invention relates in general to a swinging chair for use inconnection with sewing machines, counters and like places where it isdesired to movethe chair from an inoperative position in an out of theway place into an operative seating position, and particularly relatesto such a device designed to be mounted on a sewing machine stand orother support normally subjected position beneath the benches whenrelieved of the weight of the operators. There is an available spacebelow the work bench and above the control pedal of the machine in whichthe seat can be conveniently stored,

and accordingly one of the objects of the invention is to provide asimple form of seat support which can be moved quickly and easily fromits operative supporting position into this available space. Arefinement of this improvement contemplates the designing of a chairsupport which can be attached to the standard forms of bench supportsand whichcan be made of such small compass as to be accommodated in thespace above suggested but which can be readily withdrawn from this spaceand located so as to dispose the operator in any desired positionrelative to the sewing machine adjacent the seat.

These space limitations imposed upon the structure necessitate anorganization of parts which can be collapsed sufiiciently to accommodatethe same in the suggested space and at the same time provide arelatively long reach b yond the s pport,

Specification of Letters Patent.

Patented May 24, 1921.

A further object ofthe invention is to proyide a construction of thetype outlined and in which the weight of the person occupyin the seatwill be transmitted vertically and directly to the floor independentlyof connections with the support so as to minimize the transmission ofvibration from the ma chineparts to the operator.

Various other objects and advantages of the invention will be in partobvious from an inspection of the accompanying drawings and in part willbe more fully: set forth in the following particular description of oneform of mechanism embodyingour in vention; and the inventionalsoconsists in certain new and novel features of construction andcombination of parts hereinafter set forth and claimed.

Referring to the accompanying drawings:--

Flgure 1 1s aview in frontelevation showing 1n full lines a preferredembodlmentof our invention with the seat in supporting position andattached to a conventional form of sewing machine bench; This figurealso shows in dotted lines the inoperative position of the parts whenfoldedin an out of the way position'under the sewing machine a bench:

Fig. 2is a plan view looking down upon the'device shown inFig. 1 withparts of the machine bench broken away to show details of the mountingof the bracket support;

Fig. 3 is an'enlarged plan view of the bracket support shown in Fig.2Ilooking down upon the disclosure shown in Fig. 4 as indicated bythenumbered arrow;

Fig. 4 is a view in side elevation of the device shown in Fig. 3 lookingat the same from the left hand side as indicated by the numbered arrows;

Fig. 5 is an enlargeddetailed view in side elevation of the X-connectionbetween the numbers of the parallel motion shown in Fig. 1;

Fig. 6 is a plan view looking the detail shown in Fig. 5; and

Fig. 7 is a vertical sectional view taken thrp ugh the chair supportingmember shown in i 1. V

In the following description and in the claims, arts will beidentified'by specific down upon names ,or convenience of expression butthey'are intended to be as generic in their part 10 of a work bench orframework of a 1 sewing machine or other suitable article of ifurniture. In this disclosure the member 10 is shown to be an uprightLbeam which 7 when considered as partof a sewing machine construction issubjected to the vibrations: and arsincidental to "the running of suchmachines. There is alsofdisclos'ed in 1 the conventionalform of machinesupporting work-table 11 and foot control structionsu c 7 The chairconstituting the subject-matter press pedal 12, allas is-usualin suchcon of this disclosure may becons'ideredas an -=attacihment 5 Thisattachment includes a "bracket supporting member 13 herein shownjparticularly in Fig. 3 to be in theform of a two-jawed clamp containingthe forward flange of'them'ember 10 and securely and rigidly fixedthereto 'by-means of a through bolt 14;. One of the members is providedwith a lateral extension 15 from which proj'e'ctsa'curvecl andvertically'disposed cam lfi concentrically disposed with reference tothevertical axis of movement of a chair supporting bracket 17Thefi-bracket 17 comprises two vertically spaced apart arms 18 and 19which arms are each formed of two parallel metal strips 20 and 21fastened together along their lengths pacing blocks 22 so as to providealight rigid construction;

f The lower arm 19 -is pivotally connected to the supporting member 18by means of a ivotal connection 23 which m't p per 1 S Vet in dottedlines 1n F1g. 1.

tical movement of the arm 19 and theupper arm -18-issimilarly connectedpivotally-to the supporting member '13 by means of a bolt' 23 which ispassed vertically through V the member 13 and into the connection 23 to-which it is demountably affixed by means of a setscrew 24. The outerends of the arms 18 and 19 arepivotallyconnectedin spaced apart-relationby means ofan X-con- "nection 25 sothat the arms 18,' 19 and con-:nection25 coact to provide a parallel motion. This construction isdesigned tomaintain the" X-connection vertically disposed and with afreedom ofmovement both hori- -zontally andw' ertically' in bothdirections about the supporting member 13. This X- 'connectionispreferably made intwo parts with the parts fastened together by means ofa through bolt 26which arrangement is designedato. facilitate themounting of the formed ofan uppervmember 28 and a lower member 29fastened together by connecting rods 30 and each pivotally connected-tovertically disposed bearings 81' constituting the v forward sides of theX-connection 25. Like the bracket, both members of this extending arm 27are'formed of parallel strips of metal fastened together in spaced apartrelatlon.

, The free end of the swinging arm 27 is pivotally connected to anupstanding tubular 1116111b1"32,"13l16 lower end of which is providedwith wide-spreading legs 33 designed to engage the'floor and thussupport the weight of the person occupying the seat '34. This seat ismounted upon an adjustable rod 35' telescoping into thetop of thetubular member 32 and guided therein by spacing collars36. "The rod 35is provided with a series of pinopenings 37 designed to accommodate apin 38, betweenciwhi'ch pin and the top-0f the member 552 is positionedafchair supporting.- andcushioning spring 39.

Another spring 10 has its opposite. ends connected to the swinging armandto the elevating bracket, across the innerangle formed by these twomembersias shown ;in i Fig. 5, and normally acting upon the swinging armto move the chair supportingmember toward the supporting-member 13 andinto the space beneaththe table as :previously suggested: and'as shownin, dottedlines in Fig. 2.- "Al bracket swinging-and elevating spring 41extends lbet-weenutheextension 15 of thesupporting;memberiand:theelevating bracket; normallyacting upon the bracket to swing the sameinwardly itoward the machine so as tocause thecbracket to rise upthe'incline' provided by the cam 16 and thus move the chair andzits:supporting parts from the" lowered position shown' in full lines intothe elevated position shown lf'desiiedy a-rod2412has its upper endpivoted to and depends from 'the- -worktable 11 and a-spring43 fixedtothe lower end of the rod normally acts on the arm 18 to raise the sameinto its dotted-line--position beneaththe table as shown iiiFig 1.

In operation, assuming thatlthe'chairism its :norm-alpos1t1on beneaththe 'worketable 11, the-user pullswthe'chair forwardly and against thetension of'thes springs 101 and 41 until the seat is overthevposi-tionrelative to the machine in which the operator desiresto beseated. Pressure upon the seat-as byfsitting thereon, is transmittedthrough 1 the sp1*ing:39,places the same under tension; and acts throughthe tubular member 32 to lower the legs 33 into engagement with thefloor as shown in fulllines in Figal. A't;this time it will be notedthat the :person occupying {the seat issupported directly from'thefloo'rjand is not affected .by any vibratory "movement inherent inthe supporting member 10. ,EVibratory movementzof, lthetmemberi '10 in.any

cannot be felt by the person occupying the seat.

Itis obvious that the seat may be. advanced along the front of thework-table to either the fighter left ofthe position shown in Fig. 2 andby rotating the support 35 the front edge of the seat may be alined withthe work table or in any angular position with reference to this edge.When pressure is removed from the seat the coiled spring 39 reacts toelevate the seat 34 to any desired distance dependingupon thepositioning of the pin 38, thus insuring the proper position of the seatwhen finally rotated into its out of the way position. The spring 40acts on the swinging arm to shift the same inwardly thus reducing theangle illustrated in Fig. 6 and moving the seat into its proper position to clear any other object beneath the work-table and before thespring 40 has had time to swing the elevating bracket into its foldedposition. The spring 41 acts directly on the swinging bracket to movethe same toward the sewing machine table and at the same time causesthis bracket to ride up the cam 16 thus directing the elevated seat intoits out of the way position and over a previously defined path so as toclear any obstacles present.

By means of a device of this character it is possible for the operatorat the seat to jump up therefrom and feel assured that the seat willmove promptly and quickly over the present path and into the spaceprovided for the same beneath the work-table. At the same time it ispossible to pull the chair from beneath the machine and to position thesame in any location within the limits of the space inscribed by theelevating bracket and swinging arm when distended in alinement.

Devices of this kind, when installed in factory work, are subjected tohard usage so that the invention also features an openwork constructionpossessing a strength sufficient to resist distortion during use and atthe same time minimizes the amount of material and workmanship necessaryto construct such a strong article. By suitably adjusting the tension orlength of the several springs, the sequence of movements of the severalparts may be so timed as to insure the clearance of any obstaclesdisposed in the path of movement of the seat when moving into itsinoperative position. The parallel motion type of bracket disclosedinsures the maintenance of the seat in vertical position whilepermitting vertical and horizontal movement thereof and thisconstruction also contributes to the rigidity and strength of thebracket as a whole.

While we have shown and described, and have pointed out in the annexedclaims certain novel featuresof our invention, it will be understood(that various omissions, substitutionsand'changes in the form anddetailsof the device illustrated and in its operation may be madeby thoseskilled in the art without departing from the spirit ofthe invention.

Having thus-described our invention, we claim 1. In a device of theclass described, the combination of a bracket supporting member providedwith an elevating cam, a chair elevating bracket pivoted for horizontalmovement about a vertical axis and movable vertically in its swingingmovement across said cam, said bracket formed of two vertically spacedarms with one end of each pivotally connected to the supporting member,an X-connection pivotally coupling the free ends of said arms, aswinging chair supporting arm pivoted to said X-coupling for horizontalmovement relative thereto and a spring acting on said supporting arm andsaid bracket to swing the arm toward the supporting member.

2. In a device of the class described, the combination of a bracketsupporting mem ber provided with an elevating cam, a chair elevatingbracket pivoted for horizontal movement about a vertical axis andmovable vertically in its swinging movement across said cam, saidbracket formed of two vertically spaced arms with one end of eachpivotally connected to the supporting member, an X-connection pivotallycoupling the free ends of said arms, a swinging chair supporting armpivoted to said X-coupling for horizontal movement relative thereto, aground engaging member carried by said swinging arm and a seat mountedon said ground engaging member whereby weight on the seat is transmitteddirectly to the I said member for moving the chair either to an inwardinoperative position or to an out ward operative position, said meanscausing said chair to have a parallel bodily movement upwardly as it ismoved inwardly.

5. In a device of the class described, a support, a chair, means fornormally supporting the chair in an inwardly raised po- V sition, saidsupporting means being .eonan inward and upward: movement, said structedand arranged to give the chair a. means'including a parallelmobionconnnec- 10 bodily parallel movement downwardly as the tion. achair is moved outWa-mlly. v SignedJat New Yorkieit: .5 in thecountyaof5 f 6. The combinationbf a' support, a-chair New York and State of l\ewYork, this 3nd mounted formovement about said support, day ofJu1y,;l919-., and co-acting means between the: support a 7CHARLES'JELLINEK. anclth'e chair for causingsaid chair to have y; DAVIDSTERN)

